Kernrechtsfrage
Whether the refusal to increase the existing IV quarter pension to a half pension was lawful after the 2015 revision request.
Extrahierter Entscheid
The insured person did not prove a sufficient invalidity increase; the degree of invalidity remained below 50%.
Extrahierte Begründung
The court accepted the 2016 multidisciplinary expert report, found a relevant change only in the work profile, but no decisive deterioration sufficient to raise the invalidity degree above the pension threshold. Using updated income comparison data, the invalidity rate was 44.11%.